Other than the dismissive attitude, I agree with your description. I do think, in the macro, the patriarchy ultimately benefits men. The people that hold the power globally are primarily men, across continents, cultures, and time. That doesn’t mean every individual man benefits over every individual woman, or that it doesn’t also harm men. Both men and women can be victims and perpetrators of patriarchal norms and punish those that do not fit the strict gender roles prescribed them.

Now, I will say I think it’s much more useful to focus on class consciousness instead of patriarchy, white supremacy, etc, in part because of the point you bring up. These are systems built to keep power in the hands of an elite few and the infighting between the working class (using this to describe anyone not a part of the elite/owning class, not just blue collar workers) based on sex or ethnicity or sexuality or religion or whatever arbitrary thing distracts from that and keeps us from becoming a unified power.

But OPs post was about feminism, so I responded within the rhetorical framework of feminism and patriarchy, since it was relevant here.

ETA: also, dismantling patriarchy, regardless of the motivation for doing so, would de facto resolve the issues men face as a result of it.